The balance between bone deposition and bone resorption favours bone
growth during the first three decades of life. Peak bone mass is reached
by the age of 30. After this, bone turnover is balanced until around the
age of 50 or, for women, the onset of menopause. During the five years
around menopause, a healthy menopausal woman will lose 12 to 15
per cent of her premenopausal bone mass.j This loss occurs mainly in
trabecular bone, since this has the higher turnover rate